I recently purchased a few cans of Martin Senour Zinc Chromate Primer No. 7222 at NAPA last weekend to etch prime various suspension components on my Firebird Frame. I usually would use a red oxide primer or a standard "etching primer". When comparing the attributes of the Zinc Chromate to the straight-up etching primer, the Zinc won out IMO. Have you guys used this in past projects? I don't want to get carried away using it since it is "new" to me and don't want any issues with it later. I plan to put a Chassis Black Enamel over this stuff. Thanks Guys